Inkjet image formation method

Active Publication Date: 2020-06-11
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]According to the present invention, an inkjet image forming method that suppresses bleeding of an ink and can form an image h

Problems solved by technology

On the other hand, it is hard for the aqueous ink to be absorbed by a water-non-absorbing recording medium, such as a film, and therefor

Method used

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Examples

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Effect test

Example

[0010]In PTL 1, a treatment layer is formed using a treatment liquid containing a resin and water; that is, a treatment liquid not containing a curing agent, as described above. Further, how to set the temperature of drying the treatment liquid and the temperature of drying the ink is not studied.

[0011]In contrast, in the present invention, a precoat layer is formed using a precoat liquid containing: a resin having a functional group that reacts with a curing agent; a curing agent; and water. In this way, by using the precoat liquid containing: a resin having a functional group that reacts with a curing agent; and a curing agent, a resultant image can be cured to a certain extent or more, and therefore the water resistance can be enhanced, so that a crack at a high humidity can be suppressed. Further, a highest drying temperature T1 in drying the precoat liquid and a highest drying temperature T2 in drying the ink are adjusted in such a way as to be T2>T1. In this way, by making the...

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Abstract

This inkjet image formation method has: a precoat liquid application step in which a precoat liquid is applied to a film substrate, the precoat liquid including a curing agent, a resin having a function group that reacts with the curing agent, and water; a precoat liquid drying step in which the precoat liquid applied to the film substrate is dried to form a precoat layer; an ink application step in which an ink is applied to the precoat layer by an inkjet method, the ink containing at least a coloring material, an organic solvent, and water; and an ink drying step in which the ink applied to the precoat layer is dried to form an image. The drying temperature T1, which is the highest temperature during the precoat liquid drying step, and the drying temperature T2, which is the highest temperature during the ink drying step, satisfy T2>T1.

Description

TECHNICAL FIELD[0001]The present invention relates to an inkjet image forming method.BACKGROUND ART[0002]An inkjet method can form an image easily and inexpensively and therefore is used in various printing fields. As an ink (inkjet ink) for use in the inkjet method, an aqueous ink using water and an aqueous solvent is often used from the viewpoint such as enabling reduction of environmental load.[0003]On the other hand, it is hard for the aqueous ink to be absorbed by a water-non-absorbing recording medium, such as a film, and therefore there have been problems in the aqueous ink that bleeding of the ink occurs and it is hard to obtain adhesion with a recording medium.[0004]To solve the problems, PTL 1 for example discloses an inkjet recording method including: applying a treatment liquid containing polyvinyl alcohol (water-soluble resin) and water to a recording medium; and applying by an inkjet method an aqueous ink containing a pigment to the recording medium to which the treatm...

Claims

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Application Information

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IPC IPC(8): B41M5/52B41J2/01C09D11/38
CPCC09D11/38B41J2/01B41M5/52C09D11/54B41M5/0011B41M7/009B41M5/0047B41M5/0064B41M5/0017B41J2/2114
Inventor USHIKU, MASAYUKIMORIYAMA, HARUKATAGORI, HIROTAKA
Owner KONICA MINOLTA INC
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